Display screen or portion thereof with icon



FIG. 1 is a front view of a display screen or portion thereof with icon showing my new design; and,

FIG. 2 is front view, showing a second embodiment thereof.

The broken lines in the figures show a display screen or portion thereof, and form no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with icon, as shown and described. 